diff options
Diffstat (limited to '')
| -rw-r--r-- | src/libcoopgamma.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/libcoopgamma.c b/src/libcoopgamma.c index b6989f3..b024f52 100644 --- a/src/libcoopgamma.c +++ b/src/libcoopgamma.c @@ -18,6 +18,8 @@ #include "libcoopgamma.h" #include <sys/socket.h> +#include <errno.h> +#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> @@ -804,3 +806,203 @@ int libcoopgamma_context_unmarshal(libcoopgamma_context_t* restrict this, UNMARSHAL_EPILOGUE; } + + +/** + * List all recognised adjustment method + * + * @return A `NULL`-terminated list of names. You should only free + * the outer pointer, inner pointers are subpointers of the + * outer pointer and cannot be freed. `NULL` on error. + */ +char** libcoopgamma_get_methods(void) +{ + char num[5]; /* The size is base on the fact that we have limited `n` in the loop below */ + char** methods = NULL; + char** rc; + char* buffer; + int n = 0, saved_errno; + size_t size; + + methods = malloc(4 * sizeof(*methods)); + if (methods == NULL) + goto fail; + + for (n = 0; n < 10000 /* just to be safe */; n++) + { + char* method; + if ((n >= 4) && ((n & -n) == n)) + { + void* new = realloc(methods, (n << 1) * sizeof(*methods)); + if (new == NULL) + goto fail; + methods = new; + } + sprintf(num, "%i", n); + if (libcoopgamma_get_method_and_site(num, NULL, &method, NULL)) + goto fail; + if (!strcmp(method, num)) + { + free(method); + break; + } + methods[n] = method; + size += strlen(method) + 1; + } + + rc = malloc((n + 1) * sizeof(char*) + size); + if (rc == NULL) + goto fail; + buffer = ((char*)rc) + (n + 1) * sizeof(char*); + rc[n] = NULL; + while (n--) + { + buffer = stpcpy(buffer, methods[n]) + 1; + free(methods[n]); + } + free(methods); + + return rc; + + fail: + saved_errno = errno; + while (n--) + free(methods[n]); + free(methods); + errno = saved_errno; + return NULL; +} + + +/** + * Get the adjustment method and site + * + * @param method The adjustment method, `NULL` for automatic + * @param site The site, `NULL` for automatic + * @param methodp Output pointer for the selected adjustment method, + * which cannot be `NULL`. It is safe to call + * this function with this parameter set to `NULL`. + * @param sitep Output pointer for the selected site, which will + * be `NULL` the method only supports one site or if + * `site == NULL` and no site can be selected + * automatically. It is safe to call this function + * with this parameter set to `NULL`. + * @return Zero on success, -1 on error + */ +int libcoopgamma_get_method_and_site(const char* restrict method, const char* restrict site, + char** restrict methodp, char** restrict sitep) +{ +} + + +/** + * Get the PID file of the coopgamma server + * + * @param method The adjustment method, `NULL` for automatic + * @param site The site, `NULL` for automatic + * @return The pathname of the server's PID file, `NULL` on error + * or if there server does not use PID files. The later + * case is detected by checking that `errno` is set to 0. + */ +char* libcoopgamma_get_pid_file(const char* restrict method, const char* restrict site) +{ +} + + +/** + * Get the socket file of the coopgamma server + * + * @param method The adjustment method, `NULL` for automatic + * @param site The site, `NULL` for automatic + * @return The pathname of the server's socket, `NULL` on error + * or if there server does have its own socket. The later + * case is detected by checking that `errno` is set to 0, + * and is the case when communicating with a server in a + * multi-server display server like mds. + */ +char* libcoopgamma_get_socket_file(const char* restrict method, const char* restrict site) +{ +} + + + +/** + * Connect to a coopgamma server, and start it if necessary + * + * Use `libcoopgamma_context_destroy` to disconnect + * + * @param method The adjustment method, `NULL` for automatic + * @param site The site, `NULL` for automatic + * @param ctx The state of the library, must be initialised + * @return Zero on success, -1 on error. On error, `errno` is set + * to 0 if the server could not be initialised. + */ +int libcoopgamma_connect(const char* restrict method, const char* restrict site, + libcoopgamma_context_t* restrict ctz) +{ +} + + +/** + * List all available CRTC:s + * + * Cannot be used before connecting to the server + * + * @param ctx The state of the library, must be connected + * @return A `NULL`-terminated list of names. You should only free + * the outer pointer, inner pointers are subpointers of the + * outer pointer and cannot be freed. `NULL` on error, in + * which case `ctx->error` (rather than `errno`) is read + * for information about the error. + */ +char** libcoopgamma_enumerate_crtcs(libcoopgamma_context_t* restrict ctx) +{ +} + + +/** + * Retrieve information about a CRTC:s gamma ramps + * + * Cannot be used before connecting to the serve + * + * @param crtc The name of the CRTC + * @param info Output parameter for the information, must be initialised + * @param ctx The state of the library, must be connected + * @return Zero on success, -1 on error, in which case `ctx->error` + * (rather than `errno`) is read for information about the error + */ +int libcoopgamma_get_gamma_info(const char* crtc, libcoopgamma_crtc_info_t* restrict info, + libcoopgamma_context_t* restrict ctx) +{ +} + + +/** + * Retrieve the current gamma ramp adjustments + * + * Cannot be used before connecting to the serve + * + * @param query The query to send + * @param table Output for the response, must be initialised + * @param ctx The state of the library, must be connected + * @return Zero on success, -1 on error, in which case `ctx->error` + * (rather than `errno`) is read for information about the error + */ +int libcoopgamma_get_gamma(libcoopgamma_filter_query_t* restrict query, + libcoopgamma_filter_table_t* restrict table, libcoopgamma_context_t* restrict ctx) +{ +} + + +/** + * Apply, update, or remove a gamma ramp adjustment + * + * @param filter The filter to apply, update, or remove + * @param ctx The state of the library, must be connected + * @return Zero on success, -1 on error, in which case `ctx->error` + * (rather than `errno`) is read for information about the error + */ +int libcoopgamma_set_gamma(libcoopgamma_filter_t* restrict filter, libcoopgamma_context_t* restrict ctx) +{ +} + |